/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
The first selected class (either aUClasstype itself, or theUClassgenerated by a blueprint), or null if there are no class or blueprint types selected
const [UClass](API\Runtime\CoreUObject\UObject\UClass) * GetFirstSelectedClass ( const [UClass](API\Runtime\CoreUObject\UObject\UClass) *const RequiredParentClass ) const